Half lap for combing machines



Patented Get. 10, 1922.

UNITED STATES PATENT OFFICE.

MAX BOHMER, OF CKEMNITZ, GERMANY/ASSIGNOR TO OTTO A. BELGER, OF BOSTON,MASSACHUSETTS.

HALF LAP FOR COMBING MACHINES.

Application filed July 19, 1922. Serial No. 576,087.

To all "2.0720722 it may conoem:

Be it known that 1, MAX Btirmnm a citizen of the Republic of Germany.and resident of Chemuitz, Germany, have invented an Improvement in HalfLaps for combing Machines, of? which the following; description, inconnection with the accompanying drawing. is a specification, likecharacters on the drawing representing like parts.

This invention relates to combing machines and particularly to the partthereof commonly known as the halt lap.

' The so-called half laps of combing inachines are usually carried byacylinder or barrel and support a plurality of needle bars each havingthe row oi. needles therein. The construction usually employed insecuring the needle bars to the half laps is such that the variousneedle bars have to be put in irregular order and each needle barindividually fitted to the cylinder so that the needles will have theproper position. Further more in some constructions the means forconnecting the needle bars to the half laps is such that the needle barscan only he removed in a certain sequence and consequent.- ly ii anyneedle bar becomes damaged and requires to beremoved or repaired itisnecessary to take out all oi? the needle bars preceding the damaged onein order to remove said damaged one.

This. of course, entails a considerable amount of work; and after thedamaged needle bar has been repaired or replaced it necessitatesreplacing all the other needle bars which have been removed andreadjusting: them.

It is one of the objects of my present invention to provide an improvedhalt lap in which each needle bar is independently adjustable and iscapable of being removed or replaced independently of any other needlebar and without disturbingany other needle bar. lVith my invention,therefore, it any needle bar becomes damaged and requires to be repairedthe damaged needle bar can be readily removed without disturbing any ofthe other needle bars.

In order to give an understanding of my invention I have illustrated inthe drawings a selected embodiment thereot which will now be describedatterwhich the novel features will be pointed out in the appended.claims.

Fig. l is a vertical sectional view of a halt lap cylinder embodying myinvention. Fig. 2 is an end view with a part broken out.

Fig. 3

screw.

In the drawings 1 indicates the barrel or cylinder carrying the halflap, said eylinder being secured upon the rotatable shaft 2 as usual.The half lap carried by said cylinder is shown at 8 and it may besecured in place in any suitable way as by means of screws 4:.

The needle bars supported by the half lap are indicated at (3, eachneedle bar having a row otneedles 7 secured thereto in any suitable orusual manner.

As stated above one feature oi my invention relates to a construction bywhich each needle bar 6 can be removed or adjusted in the half lapindependently of any other needle bar. One way in which this may beaccomplished is herein illustrated. The half lap 3 is provided with aseries of slots 8 which have the proper inclination to a radial line andwhich are adapt-ed to receive the needle bars 6. i ecured to each end ofthe half lap are plates 9. said plates being retained in position byscrews 10 and posi cloning pins 21 which extend from the ends of thehall: lap into apertures in the plates 9. These plates 9 carry means foradjustably retaining each needle bar in position, said means being soconstructed that each needle bar can be individually removed.

The means I have herein. provided for this purpose comprises a pair ofscrews 11. and 12 for each end. of each needle bar. Each needle bar isshaped at each end to present the two oppositely-inchned surfaces l3 and14 forming between them a pointed portion 15. Each needle bar is alsotermed with the portion [(5 which bears against the inner face of thecorresponding plate 'l hese plates, therefore. serve to preventlongitudinal movement oi? the needle bar.

As stated above there is a pair oi? screws ll, 12 at each end oi eachneedle bar. Each screw ll is provided with a rounded inner end 11' whichengages the inclined face 1? ol the needle bar and each screw l2 isprovided with a pointed inner end 18 which en- ;ran'es the inclined edge'l-;t ot the need is bar.

In inserting a. needle bar in place the a detail view of the adjusting;

screws 11 are backed off sufficiently to permit the pointed portions 15to pass by them and to permit the inclined edges 14 to rest against thepointed ends 18 of the screws 12. The screws 11 may then be turned upuntil they engage the bevelled edges 13. It the screws 12 are properlyadjusted then the needle bar will be in proper position when the edges14 thereof rest on the bevelled ends 18 ot the screws 12 and the turningup of the screws 11 will simply look the needle bar firmly in position.If, however, it is de sired to adjust the needle bar outwardly in orderto bring the needles into proper position then the screws 11 may bebacked off slightly and the screws 12 turned up, this resulting inforcing the needle bar outwardly. On the other hand, it it is desired toadjust the needle bar inwardly the screws 12 may be backed off and thescrews 11 turned. up.

Since there is a pair of screws 1.1 and 12 at each end of each needlebar it will be seen that each needle bar can be adjusted independentlyof any other needle bar by simply manipulating the proper screws.Similarly each needle bar can be readily removed or replacedindependently of any other needle bar so that the operation. of removinga needle bar fOllH'tY purpose does not in any way disturb the positionof the other needle bars.

If a needle bar has been removed for any purpose then when it isreplaced there will. be no necessity of making any adjustment of theneedle bar because it the screws 12 are not disturbed the needle barwill have the correct position when it is replaced and all that isnecessary to do is to tighten the screws 11 to hold the needle bar inplace.

I have herein shown the screws 11 and 12 as being split at their outerends and in making the screws the split ends will preferably be spreadslightly as shown in Fig. 3 so that when the screws are screwed into theplate 9 the spread ends will be forced together. In this way asuflicient friction is produced so that the screws will not be loosenedduring use and, therefore, will not lose their adjustment. Any other wayof locking the screws so that they cannot lose their adjustment duringthe operation of the machine may be adopted, however, without departingfrom the invention.

I claim.

1.. In a device Of the class described, the combination with a drum, ofa hall. lap thereon provided with a plurality of slots, a needle bar ineach slot, a plate secured to each end of the half lap, and adjustingscrews carried by the plate for retaining the needle bars in adjustedposition.

2. In a combing machine, the combination with a drum of a halt lapthereon provided with a plurality'ot slots, a needle bar in each slot,each needle bar having at each end two oppositely-inclined edges. aplatesecured to each end of the halt lap a plurality of pairs of screws ineach plate. there being one pair for each needle bar, the screws of eachpair engaging the inclined edges of the needle bar and operating toretain the needle bar adjustably in position.

In testimony whereof, I have signed my name to this specification.

MAX BonMnR.

